Improved machine tor serrating sickle-sections



KPETERS, PNOTO-UHOGRAPHER. WASHINGTON. u. C.

Tfnow all men by these presents.-

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SAMUEL D. SHELDQN, or FITCHBURG, MASSA@HUs'E'rrsfJ:F

Lettesfwtent No. 86,462, dated February 2, i869.

IMPROVE!) MACHINE FOR SERRATING- SICKLE-SECTONS.

The Schedule referred to in these Letters Patent and making part of thesama.

That I, SAMUEL D. SHELDON, of Fitchburg, in the county of Worcester',and Commonwealth of Massachusetts, have invented certain new and usefulImprovements in Machines for Serrating Sickle-Sections for Mowers andReaper-s; and I do hereby declare that the following is a full, clear,and exact description of the same, reference being had to'theaccompanying drawings, forming a part of this specification, in which-Figure l represents a plan view of my serrating-machille Figure 2represents 'a front elevation of my ser-ratingmachine; v

Figure 3 represents a view of the right-hand side of 'the same; v

Figure 4 represents a section at line A B, iig. l; and

Figure 5 represents the shipper and catch-levers, showing theiroperation. y

To ,enable those sk1lled in the art to which my invention belongs, tomake and use the.same,1 will proceed to describe it more in detail.

The nature 'of my invention consists- First, in `combinin g theanvil-block with the bed of the machine, iu the peculiar mannerhereafter described.'

Second, in combining and arranging the anvil-block and the Vdrop forsupporting the chisel or cutter in relation to each other, as hereafterset forth.

Third, in the combination, with the drop, of an adjust-able spring, inthe peculiar manner and'for the purposes` hereafter described.

, Fourth, in the combination, with the drop and shipping-lever, of acatch-lever and holding-device, as hereafter explained.

Fifth, in' combining a"frictionclutch with the shaft which operatesthean vil-block, as hereafter described.

Sixth, in combining an adjustable rack with the anvil-block and itsoperating-gear.

Seventh, in the combination, with the clamping-lever, of an eccentricand hand-lever, as hereafter described.

Eighth, in the combination, with the anvil-block, of a bolster andface-plate, as and for the purposes hereafter explained.

Ninth, in the combination, with the anvil-block, of an adjusting-device,to regulate its motion, as will be hereafter explained;

. Tenth, in the combination, with the channelled and ,slotted bed, of astop-piece, as hereafter described.

Eleventh, in the construction and combination of the parts of asickle-section-ser1-ating machine, as hereafter set forth.

In the drawings- The part marked A is the bed-piece, or table,sup portedby legs or standards, A', at a convenient height for the operator. Y

Across the surface of the hed-piece A, is a groove, a, extending fromfront to rear, inwhich ts and slides the guide-piece upon the bottom ofthe anvil-block B, as indicated in the drawings, figs. 2 and 3, bydotted lines.

The top surface of the anvil B is inclined downward y from one side tothe other, and is furnished/with a steelA face-plate, B. rlhe edge-thereof, upon which the chisel falls, is bevelled olf, in a directionopposite to the incline ofthe surface ofthe anvil B.

At the side of the face-plate B', and of equal thickness, is a bolster,b, secured to the anvil, and having, atits forepart, a flange, b',extending by the corner of the plate B, whereby the latter is retainedin proper position,"without being bolted, thus allowing the faceplate Bto be readily changed in case of wear or accident. g

On the top ofthe bolster b is secured a gauge-piece,

c,.made to conform to the shape of the sectiond, and.

against which the sections are placed tobring them into proper positionbeneath the chisel, where they are retained by means ofthe clamp-leverC.

The lever G is secured to the anvil by the journal e, which passesthrough ears, 5, on the anvil-block.

The long arm of the lever extends back, and rests upon an eccentric, C',upon a shaft, e', extending from side to side of the anvil-block B, andworking in the bearings j, as fully indicated in the drawings.

To the end of this shaft c', is fastened a lever, D, that extendsforward, and is furnished with a handle, d', at the end.

By pressing down lever D, the eccentric Cl raises the rear end of leverO, thereby pressing the front end firmly on to the section d, andholding it securely while it is serrated.

The lever D is held down by being latched under` `the' piece g, fastenedto the front of the anvil D, for

that purpose.

At the rear end of the anvil-block is fastened a rack, E, and soarranged with the slots and screws h, in the rear part o f theanvil-block, that said rack can be adjusted up or down, for a purposehereafter explained.

Above the anvil B, and supported from the bed-piece A, at the sidesthereof, is a frame, F, and to its face there are bolted guides, F',between which the drop or hammer, G, rises and falls, sliding freely upand down in the.- grooves made for that purpose-in the inner edges ofthe guides F. l

One 'of the guide-pieces can be adjusted by means of the slots t' in theguide-plate, and the set-screws k, which pass through a flange, 6, atthe side of the frame F, as shown in the drawings, whereby the parts canbe adjusted to compensate for any wear.

The upper,` part of the frame F, with the guide-plate F and the drop G,is inclined backward, so that the chisel H will strike the sectionat therequired angle.

The chisel H passes down through an opening in the projection on theface of the drop G, and lis held in place by means ofthe set-screws Z l.

Back of the frame F, is the main shaftX, to whichthe power is applied.

It is supported and turns in the bearings m m, upon the frame F.

Upon this shaft, in rear of the drop, is a tilt-wheel, L, furnished withpoints, n, which engage the notch o,

.in the back side of the drop G, thereby raising the drop as the shaftrevolves.

The notch o has a steel lining, which can be easily replaced when wornout.

The drop G is thrown downward by means of a spring, M, one end of whichrests on the drop G, and the other end is supported from the bed-piece,by the peculiarconstructed standard M.

A set-screw, p, is arranged in a cross-piece at the top of the standardM', whereby the pressure of the spring vM can be regulated.

The drop G is prevented from being thrown too high by striking the toppiece 7 of the frame F.

Parallel to the main shaft, and at the back part of the machine, isanother shaft, N, supported by bearings, N, and which receives itsmotion by the action, on its gear, R, of the wormgear,-O, upon the endof a shaft which passes transversely between the shafts K and N, throughthe bearing O, on the bed-piece A, and which is driven, from the mainshaft K, by a pair of mitre-gears, P, as fully indicated in thedrawings.

.Upon the shaft-N is placed a friction-clutch, S, to the hub S' of whichis keyed -a pinion, T, which meshes into the rack E, fastened to therear end of the anvilblock B, and by which the latter is moved back whenthe machine is in operation. y

The pinion T and clutch S are kept in position, on the shaft N, by meansof a collar, s, secured to the shaft N.

The inner or sliding portion of the friction-clutch is moved in and outby means of a forked slide, q, the fork of which runs in a groove in itshub, while the shank of the fork extends downward to the bed-piece A,where it is bent at a right angle, and passes under the guides r a", bywhich it is kept in place.

The shaftNis prevented from vibrating by set-screws t, placed in theheads of bearings N'.

The shipper-lever a is pivoted, at its end u', to the bed-piece A, nearthe rear edge, and from thence extends to the fi'ont of the machine,where it is turned to form a handle, u.

This lever is connected to the forked slide of the friction-clutch, bymeans of a pin, c, which passes up through a slot in the shipper-lever.

Beneath the lever U is placed a spring, 10, (shown in fig. l by dottedlines,) sufficiently strong to throw the machine out of gear. At itsrear end it is secured to the bed-piece A, and its front end restsagainst a pin in the under side of the shipper-lever U.

Passing through the side of the frame F, with its fulcrum, V', on thebase thereof, is a catch-lever, V, extending from near the side of theanvil B to beyond the shipper-lever U, and in the end of this lever V,which is turned downward, forming a right angle, is a screw, w, thatpasses through the projection, and

' against the end of which, when the machine is thrown into gear, theprojection on the side of the shipperlever, rests.

To the side of the anvil-block is secured a dog, w, which strikes theend of the catch-lever V, as the anvilblock moves back, to throw themachine out of gear, and it is so arranged that it can -be adjusted bythe screw y, in thev front of the anvil-block, whereby the movement ofthe latter can be regulated.

The dog w, in this instance, is slotted out in two places, andguide-screws, S 8, pass through said slots into the anvil-block B,thereby retaining it in place as it is moved back and forth by theadjusting-screw y,

which has a groove in its head to receive the forked ends, 9, of the dogw.

' The dog w may be fitted in a dovetailed or otherformed groove, cut in-the side of the anvil-block B, if

preferred. At the front of the frame F, and pivoted thereto at z, is anupright lever, X,the upper end of which passes,

between two pins, 1, in the back of the catch-bar '1, sliding it backand forthwith the movement of the shipper-lever, to which the lower endof the lever X is connected by the rod Y.

The lower end of lever X is slotted, to prevent binding of itsconnection with rod Y.

To the front edge of the bed-piece A, in front of the anvil-block B,isfastened a stop-piece, Z, against which the anvil-block strikes, and isprevented from .coming too far forward.

An opening, a', is cut in the edge of the bed-piece, in order that anychips or dirt, which may byaccident get into the channel o r groove a,can fall ont.

The auvil B may be moved forward by a spring, Q, beneath the bed-pieceA, one end being fastened toa pin, 2, fixed in the under side of thebed-piece A, and the other end fastened to a screw or pin, 3, fixed inthe bottom of the anvil-block B, and passing through a slot in thcbed-piece A; or the anvil maybe moved forward by a weight, attached to acord or chain passing over a pulley under the lbed-piece, and which lastarrangement may be preferred by some, where there is ample room.

The upright part of the bearing 0 may be made in two pieces, and securedtogether by bolts passing through 'slots in one or both of said pieces,whereby the wormgear shaft can be adjusted up or down, as may bedesired. l

In lieu of making the guide-piece, at the bottom of the anvil-block,square, it may be made in dovetail-form, as well as the groove, andpieces placed at its sides, in

vthe groove a, to be set up, by means of screws, to compensate for anywearing of the parts.

In lieu of making the slots for adj listing the rack El in the end ofthe anvil-block, they may be made in the rack.

' The operation isas follows:

The sections are placed upon the face-plate of the anvil, against thegauge-piece c, which brings the edge to be serrated along the bevellededge of the face-plate B', as indicated in figs. 1 and 2. The lever D isthen pressed down, and latched under the piece g, on the front of theanvil,.bringing the clamp-lever C down upon the section, which isthereby held securely in place. Power now being applied to the mainshaft K, the operator presses the handle u, of .the shipper-lever U,towards the anvil B, where it is-held by the catchlever V, the end ofwhich is thrown back, by means l of a spring, 4, far enough to allow theprojection x, on the side of' the shipper-lever U, to rest against thescrew at the end of the catch-lever V, as indicated by'y dark lines,fig. 5.

By the above movement of the shipper-lever U, the friction-clutch isthrown into gear, andthe catch-bar I is drawn back by lever X, whichlets the drop G fall, thereby bringing the chisel H down with force intothe section d.

During the operation of the machine, the drop G is raised by thetilt-wheel L, and thrown down by the spring M, with a rapidmotion,'while the anvil B is gradually carried back by the pinion T andrack E. After the anvil has moved back the length of the edge to beserrated of the section d, the dog w strikes the end of the catch-leverV, swinging it off from the projection x ou the shipper-lever U, thusallowing the latter to be thrown back by the spring l0, underneath it,which'slides in the eatch-bar I, catching and hold-1 i ation ofseri-ating that side of the section being cornpleted.

The machine herein described is a right-hand maf chine, and serratesonly one edge of the sections. For serrating the other edge,.a left-handmachine is used, the principle and construction of which are the same,but the arrangement is reversed. i

The right-hand andV left-hand machines may be built upon one bed-piece,and I so intend to build them, the main and rear shafts being prolongedto operate both. By such a construction and arrangement of themachines,one person can conveniently tend'bot-h ma# chines.

To regulate the coarseness of the teeth, or serra. lions, cut onthesections, the pinion I is changed, for liner teeth, a smaller pinionbeing used, and for coarser teeth, a larger pinion, thereby moving thean-- vil back faster or slower, as the ease may be.

Having described my machine for serrating sicklesections,l

What I claim therein as new, and of my invention,

.and desire to secure by Letters Patent, is

l l. The improved machine herein described, for serratingsickle-sections, the constituent parts of which are constructed andarranged, in relation to each other, substantially as set forth.

2. Unshipping the clutch and arresting the drop, simultaneously, by themechanism and in the manner shown and described.

3. Reciprocating the anvil-block B, by means of the rack E, pinion T,friction-clutch S, and spring g, all arranged and operating as setforth.

4. The construction'and arrangement of anvil-block g, anvil B', bolsterb, and gauge c, in the manner speci- 5, The arrangement ofthereciprocating dog lw, lever V, spring-lever u, connecting-rod y, leverX, and clutchbar I, as and for the purpose specified.

Y 6. The arrangement of the reciprocating dog w, notched spring-lever u,forked slide q, and clutch S, as and for the purpose specified.

7. The arrangement of the latch g on the anvil-block,

the lever D, eccentric-shaft C', and elampingdever C,

in the manner described.

SAMUEL D. SHELDON.

lWitnesses: LUoIUs K. MILES, EPHM WHITMAN.

